Wood-beudestg machine



' UNITED STATES PAuTENT OFFICE.

DAVID B. IIEDDEN, OF NEIVARK, NEIV JERSEY.

WOOD-BENDING MACHINE.

Speccaton of Letters Patent No. 30,404, dated October 16, 1860.

To all whom 'it may concern:

Be it known that I, DAVID B. HEDDEN, of Newark, in the county of Essex and State of New Jersey, have invented a` new and useful Improvement in the Mode of Bending Timber; and I do hereby declare that the following is a full and exact description of the said invention, reference being had to the accon'ipanying drawing, making part of this specification.

The figure represents one side of the machine, with corresponding parts on the opposite side.

A, is a frame which supports the bed R, upon which the sliding carriage O, moves between the side pieces'S.

B, is a part of the frame which holds the gearing C; on the end of the upper shaft is placed the form D, around which the timber T, is bent.

Gr, is a band about the timber, which two are secured under the strap E, by the wedge F. The other end of the band is made fast to the pinion H, which rests in the hook of the piece I, which is secured to the carriage O.

K, is a bar hung in the piece I, by the pinion I); the lower end of which receives the pressure of the end of the timber to be bent; which expands in the process of bending. The bar is furnished with a weight L, of such size, and placed upon it at suoli point as to be a self-acting graduating and equalized pressure upon the end of the timber.

M, is an eccentric placed on the same pinion with the lever N, for the purpose of throwing the bed R, and carriage O, up against the band and timber when it is ready to bend.

I do not claim any of the general fixtures herein described, neither do I claim the principle of end pressure, which has long been in use; but I do claim- My mode of applying the end pressure, by means of an adjustable weight, as superior to all other modes, being a self-acting, perectly graduating and equalized pressure DAVID B. HEDDEN.

IVitnesses LYSANDER IIIRIGHT,

H. HARRIS. 

